EP1327409A1 - Einlassystem für einen zentralen Staubsauger - Google Patents

Einlassystem für einen zentralen Staubsauger Download PDF

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Publication number
EP1327409A1
EP1327409A1 EP02445104A EP02445104A EP1327409A1 EP 1327409 A1 EP1327409 A1 EP 1327409A1 EP 02445104 A EP02445104 A EP 02445104A EP 02445104 A EP02445104 A EP 02445104A EP 1327409 A1 EP1327409 A1 EP 1327409A1
Authority
EP
European Patent Office
Prior art keywords
flange
intake
edge
intake system
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02445104A
Other languages
English (en)
French (fr)
Other versions
EP1327409B1 (de
Inventor
Darin Biere
Jason L. Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux Home Care Products Inc
Original Assignee
Electrolux Home Care Products Inc
White Consolidated Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux Home Care Products Inc, White Consolidated Ltd filed Critical Electrolux Home Care Products Inc
Publication of EP1327409A1 publication Critical patent/EP1327409A1/de
Application granted granted Critical
Publication of EP1327409B1 publication Critical patent/EP1327409B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • F16L37/252—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/38—Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/11—Plugs

Definitions

  • the present invention relates generally to a central vacuum cleaner apparatus, and more particularly, to an adaptable twist lock intake system for use with a canister commonly included in a built-in vacuum cleaner frequently found in a building such as a house and useful for vacuuming floors, carpets, drapes, upholstery, etc. in the house.
  • a first known type of central vacuum cleaning apparatus traditionally has one main vacuum (suction) intake on one side of the canister unit and a utility vacuum (suction) intake on the front of the canister unit.
  • the main suction intake is used for connecting the network of piping in the house to the canister unit, and the utility suction intake is used when the homeowner wants to use the vacuum in a location that is relatively close to the canister unit.
  • the utility suction intake is used when the homeowner wants to use the vacuum in a location that is relatively close to the canister unit.
  • only one of these intakes is used at a time.
  • a second type of central vacuum cleaning apparatus has a dual intake configuration, wherein two vacuum (suction) intakes are located on diametrically opposite of each other on the wall of the canister unit.
  • two vacuum (suction) intakes are located on diametrically opposite of each other on the wall of the canister unit.
  • the other is either capped off or utilized as a utility vacuum intake with the result that only one of the suction intakes is used at a time.
  • a central vacuum cleaning apparatus it is desirable for an installer of a central vacuum cleaning apparatus to have an option to use a main vacuum intake located on either the left or the right side of the canister unit and to be able to utilize a simple intake coupling assembly. Additionally, it is further desirable for the homeowner to have a cleaning apparatus provided with a usable front-located utility vacuum intake.
  • the present invention is an improved system for adapting the intake configuration of a central vacuum cleaning system.
  • the present invention provides not only a custom vacuum intake connection arrangement for an installer, but also the convenience of a front-located utility vacuum intake for a homeowner.
  • the canister of the central vacuum cleaning system of the present invention is provided with at least two vacuum intake openings from which the installer can choose, depending upon which is in the most convenient location.
  • the installer attaches the intake coupler of the present invention at the selected intake opening and a cap of the present invention at the non-selected opening(s) to close or cap them off.
  • the intake coupler of the present invention comprises a unitary tube having a central flange with two locking tabs.
  • the intake openings of the canister are circular holes with notches that are complementary to the locking tabs. Installation of the intake coupler into the intake opening is accomplished without the need for glue, clamps, tools or any other equipment by inserting the coupler into the desired intake opening so that the flange meets the canister wall surrounding the opening.
  • a gasket is positioned within the interface to provide an adequate seal. Partial rotation of the intake coupler relative to the canister wall causes the tabs to engage their respective intake opening notches.
  • the cap of the present invention is constructed and arranged similarly to the intake coupler.
  • the cap is provided with the same basic flange, tabs and gasket; however, when it is installed, the body of the cap extends mostly into the interior of the canister unit from the flange.
  • the cap is provided with a diametrical wall to permit hand rotation at its external end.
  • the coupler 10 generally comprises a unitary, conduit-like main body 12 having a first end (outlet) section 12 a , a second end (inlet) section 12 b and a mid-section 12 c that lies between the first and second end sections 12 a and 12 b .
  • the section 12 a has a central, longitudinally extending axis A
  • the section 12 b has a central longitudinally extending axis B
  • the section 12 c has a central longitudinally extending axis C.
  • the axes A and C intersect at a point lying on a plane oriented perpendicularly to the axes A and C and passing through the first angular bend 12 d and the first arcuate bend 12e where the sections 12 a and 12 c join one another.
  • the axes A and C intersect one another at an obtuse angle a ac that preferably will be 135°
  • the axes B and C intersect at a point lying on a plane oriented perpendicularly to the axes B and C and passing through the second angular bend 12 f and the second arcuate bend 12 g where the sections 12 b and 12 c join one another.
  • the axes B and C intersect one another at an acute angle a bc that preferably will be 22.5°
  • the sections 12 a , 12 b and 12 c of the body 12 collectively form a winding, inner passageway 14 that extends between a first circular opening 12 a 1 defined by the first end section 12 a of the main body 12 and a second circular opening 12 b 1 defined by the second end section 12 b of the main body 12.
  • the diameter of the passageway 14 at the second circular opening 12 b 1 is marginally larger than the diameter at the first circular opening 12 a 1 .
  • the second end section 12 b of the body 12 includes a radially extending flange portion 12 b 2 and an axially extending sleeve portion 12 b 3 that cooperatively define a widened neck region 14 a of the passageway 14.
  • a lug 16 projects radially outward from and axially along the sleeve portion 12 b 3 of the second end section 12 b .
  • the lug 16 comprises a first side wall 16 a , a second side wall 16 b , and an outer wall 16c.
  • the first and second side walls 16 a and 16 b are parallel to one another and extend radially away from and axially along the outer surface of the portion 12 b 3 .
  • the outer wall 16 c which is spaced radially away from and extends axially parallel relative to the portion 12 b 3 , is joined at its opposing axially extending edges to the radially outermost ends of the first and second side walls 16 a and 16 b .
  • the inner faces of the first side wall 16 a , the second side wall 16 b , and the outer wall 16 c form a channel 17.
  • the channel 17 openly communicates at first opening 17 a with the neck region 14 a of the passageway 14, at second opening 17 b with the second circular opening 12 b 1 and at third opening 17 c with the region exterior to the axially extending sleeve portion 12 b 3 of the second end (inlet) section 12 b .
  • the channel 17 is also provided with first and second orifices 17 d and 17 e that respectively extend through the first and second side walls 16 a and 16 b of the lug 16.
  • a bolt 11 extends through the orifices 17 d and 17 e .
  • a nut 13 secures the bolt 11. The nut 13 and bolt 11 are used to adjust the circumference of the axially extending sleeve portion 12 b 3 of the second end (inlet) section 12 b for clamping the intake coupler 10 to a clamping flange of a vacuum piping network.
  • the mid-section 12 c of the coupler 10 includes a flange 18 and a pair of flange tabs 19.
  • the flange 18 is integrally joined at its radially innermost curved edge to the outer surface of the mid-section 12 c and has a first annular face 18 a , a second annular face 18 b and a radially outer curved edge 18 c .
  • the first annular face 18 a is generally oriented toward the inlet end of the coupler 10, and the second annular face 18 b , which is parallel to the face 18 a , is oppositely oriented toward the outlet end of the coupler 10.
  • the pair of flange tabs 19 includes a first flange tab19 a and a second flange tab 19 b .
  • the flange tabs 19 a and 19 b are integrated transversely with the flange 18 at the second annular face 18 b and circumferentially with the mid-section 12 c at the outer surface thereof.
  • the flange tabs 19 a and 19 b are positioned on the second annular face 18b and the outer face of the mid-section 12c so that they are diametrically opposite one another.
  • the flange tabs 19 a and 19 b are structurally identical in all respects; therefore, a description of the structure of only one of them, the flange tab 19 a , will be provided here, and it will be recognized that whatever structural description is provided for the tab 19 a will be equally applicable to the other tab 19 b .
  • the flange tab 19 a is comprised of three integrated segments: an arcuate first end segment 19 a 1 , a straight middle segment 19 a 2 and a straight second end segment 19 a 3 .
  • the arcuate first end segment 19 a 1 serves, among other things, as a means to join the tab 19 a to the flange 18.
  • the straight middle segment 19 a 2 extends in a plane that is perpendicular to the central longitudinal axis C of the mid-section 12 c of the main body 12.
  • the second end segment 19 a 3 adjoins the straight middle segment 19 a 2 and is angled away from the second annular face 18 b of the flange 18 and toward the straight middle segment 19 a 2 of the tab 19 a .
  • the second annular face 18 b of the flange 18, the outer surface of the mid-section 12 c and the surfaces 19 a 1 ', 19 a 2 ' and 19 a 3 ' of the tab 19 a cooperate to define a circumferentially extending slot 15 a between the flange 18 and the tab 19 a .
  • the purpose of the circumferentially extending slot 15 a along with a corresponding slot 15 b formed between the flange 18 and the tab 19 b will be explained later.
  • the intake closure means 20 included in the intake system of the present invention is shown in Figs. 8-11.
  • the intake closure means 20 is a stopper-like structure molded from a plastic substance and having a substantially radially extending, disc-like base portion 22, a substantially axially extending, cylindrical main body portion 24 and a substantially radially extending, annular flange portion 26.
  • the closure means 20 also has a radially and axially extending partition portion 28 that, along with the disc-like base portion 22 and the cylindrical main body 24, defines a pair of recesses 27 and 29 that are situated on opposite sides of the partition 28 and are dimensionally the same in all respects.
  • the partition portion 28 allows for hand grasping and manipulating the closure means 20 in a manner as will be hereinafter discussed.
  • the intake closure means 20 also has a pair of closure means flange portion tabs 23 that are diametrically located relative to each other.
  • the pair of closure means flange portion tabs 23 includes a closure means flange portion first tab 23 a and a closure means flange portion second tab 23 b .
  • the first and second tabs 23 a and 23 b are structurally and dimensionally the same as the flange tabs 19 a and 19 b provided on the intake coupler means 12.
  • the tabs 23 a and 23 b are integrated transversely with the flange 26 at an annular face 26 a that is oriented toward the base portion 22 of the closure means 20.
  • the tabs 23 a and 23 b are also integrated circumferentially with the cylindrical main body portion 24 at the outer surface thereof.
  • the tabs 23 a and 23 b , the flange 26 and main body portion 24 cooperatively define apair of circumferentially extending slots 25 a and 25 b .
  • the slots 25 a and 25 b have the same purpose as the slots 15 a and 15 b provided on the intake coupler means 12, which purpose will be hereinafter explained.
  • Projections 21 project from the base portion 22 to form opposed and offset engagement surfaces 21 a .
  • the projections 21 can be, for example, molded as a part of the closure 20 in an A-shaped configuration.
  • the engagement surfaces 21 a are arranged so that a lever, such as a wrench or screwdriver can be inserted between the surfaces. A force can then be applied to the lever to rotate the intake closure 20 to facilitate installation and removal.
  • Figs. 12 and 13 show a gasket 30 included with the intake system of the present invention.
  • the gasket 30 is made of a resilient solid substance such as Santoprene® rubber, or any other substance having suitably similar properties.
  • the gasket 30 is used with the intake coupler means 10 and with the intake closure means 20 in a way that will hereinafter be explained.
  • the gasket 30 is comprised of a pair of first and second axially disposed, parallel faces 32 and 34 and a pair of first and second radially disposed, concentric edges 36 and 38.
  • the first edge 38 has a diameter that is greater than the diameter of the radially curved outer edge 18c of the flange 18 of the coupler means 10 and the diameter of the radially curved outer edge 26 a of the flange 26 of the closure means 20. Adjacent the first edge 38, the gasket is thicker to form an axial flange 39.
  • the diameter of the second edge 36 of the gasket 30 is smaller than the diameter of the radially curved outer edge 18 c of the flange 18 of the coupler means 10 and the diameter of the radially curved outer edge 26 b of the flange 26 of the closure means 20.
  • the second edge 36 defines a central void 37 in the gasket 30.
  • the edge 36 further defines a pair of first and second notches 31 and 33.
  • the notches 31 and 33 have longitudinally extending central axes 31' and 33' that are equidistantly offset by a distance " d " relative to a transverse axis D that extends through the center of the gasket 30.
  • the notches 31 and 33 are shaped to have arcuate first ends 31 a and 33 a , straight parallel sides 31 b and 31 c and 33 b and 33 c , and open second ends 31 d and 33 d .
  • the notches 31 and 33 are configured to permit the gasket 30 to be applied to the coupler means 10 and the closure means 20 in a manner that will now be described.
  • the central void 37 receives the first end (outlet) section 12 a ofthe conduit-like main body 12.
  • the flange 39 ofthe gasket 30 faces away from the flange 18 of the coupler 10.
  • the edge 36 is then slid axially along the outer surface of the first end (outlet) section 12 a and thereafter along the outer surface of the mid section 12c of the conduit-like main body 12 until the gasket 30 abuts the first flange tab 19 a and the second flange tab 19 b .
  • the gasket 30 is then gently stretched in the radial direction over the tabs 19 a and 19 b and, if necessary, rotated clockwise or counter-clockwise so that the notches 31 and 33 receive first curved end segments of the tabs 19 a and 19 b and either of the axially disposed, parallel faces 32 and 34 contacts the second annular face 18 b of the flange 18.
  • the central void 37 receives the disc-like base portion 22 and the cylindrical main body portion 24 of the closure means 20.
  • the edge 36 is then slid axially along the outer surface of the main body portion 24 until the gasket abuts the first flange tab 23 a and the second flange tab 23 b .
  • the gasket 30 is then gently stretched in the radial direction over the tabs 23 a and 23 b and, if necessary, rotated clockwise or counter-clockwise so that the notches 31 and 33 receive first curved end segments of the tabs 23 a and 23 b and either of the axially disposed, parallel faces 32 and 34 contacts the second annular face 23c of the flange 18.
  • Figs. 14 and 15 show a portion of a cylindrical, preferably metal, canister unit 40 that is adapted for use with the intake system of the present invention.
  • the portion of the canister unit 40 includes a canister wall segment 42 and a portal structure 44.
  • the portal structure 44 is preferably formed in the wall segment 42 by a known stamping process.
  • the portal structure 44 projects radially outward from the wall 42 and defines a canister intake opening 46 of the present invention.
  • the portal structure 44 comprises a first gusset-like portion 44 a , a second gusset-like portion 44 b and a ring-like plate portion 44 c .
  • the curved edges 44 a 1 and 44 b 1 of the first and second gusset-like portions 44 a and 44 b lay in a plane that is tangent to the wall 42 at the canister intake opening 46 and cooperate with adjoining portions of the canister wall 42 to define the periphery of the ring-like plate portion 44 c .
  • the canister intake opening 46 includes a flange shaped to receive and co-act equally well with either the first and second flange tabs 19 a and 19 b included on the flange 18 of the mid-section 12 c of the intake coupler means 10 or the first and second tabs 23 a and 23 b included on the annular flange portion 26 of the closure means 20 to form a mounting structure for mounting the intake coupler to the suction intake.
  • the canister intake opening 46 is defined by the first and second arcuate edges 46 a and 46 b , by the third and fourth arcuate edges 46 c and 46 d , by the first and second straight edges 46 e and 46 f , and by the third and fourth edges 46 g and 46 h .
  • the first and second straight edges 46 e and 46 f respectively join terminal points of the first and third arcuate edges 46 a and 46 c and of the second and fourth arcuate edges 46 b and 46 d to form the sharp notches 47
  • the third and fourth edges 46 g and 46 h respectively join terminal points of the second and third arcuate edges 46 b and 46 c and of the first and fourth arcuate edges 46 a and 46 d to form the blunt notches 48.
  • the tabs 19 a and 19 b or 23 a and 23 b are received by the opening 46 so that either the annular face 18 b of the flange 18 of the coupler 10 or the annular face of the flange 26 of the closure means 20 abuts the ring-like plate portion 44 c of the portal 44 and either the free end of the straight second end segment 19 a 3 of the tab 19 a (or segment 19 b 3 of the tab 19 b ) or the comparable free end of the straight end segment of the tab 23 a (or the tab 23 b ) is received by one of the sharp notches 47, i.e., the free end of the tabs 19 or 23 is spaced arcuately counter-clockwise relative to and axially inward from either the first straight edge 46 e or the second straight edge 46 f of the opening 46.
  • the coupler means 10 or the closure means 20, along with the gasket 30 assembled thereto in the manner explained hereinabove, can simply and expeditiously be rotated clockwise by hand in the opening 46 until the arcuate first end segment 19 a 1 of the tab 19 a (or segment 19 b 1 of the tab 19 b ) abuts one or the other of the straight edges 46 e or 46 f or until the comparable arcuate first end segment of the tab 23 a (or the tab 23 b ) similarly abuts one or the other of the straight edges 46 e or 46 f .
  • portions of plate 44 c that define the third and fourth edges 46 c and 46 d of the opening 46 are received in the circumferentially extending slots 15 a and 15 b of the coupler means 10 or in the comparable circumferentially extending slots of the closure means 20 with the gasket 30 being situated between the inside face of the plate 44c and the tabs 19 a and 19 b or 23 a and 23 b .
  • the portions of plate 44 c that define the third and fourth edges 46 c and 46 d of the opening 46 preferably are gently indented gently inward toward the center of canister unit 40.
  • the intake coupling system of the present invention makes it possible for an installer to select one or the other of the two portal structures 44 for receiving the intake coupler 10 based on which of the structures 44 is most convenient for making a connection with an end of the vacuum piping network installed in the house and to effectively seal off the non-selected portal structure 44 with the closure means 20. It should further be evident that the intake coupling system of the present invention makes it possible for the intake coupler means 10 and the closure means 20 to be installed into and removed from the portal structures 44 simply by twisting them by hand and without the need for any tools or application of sealant substances such a glue or cement.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Cleaning In General (AREA)
  • Manipulator (AREA)
  • Closures For Containers (AREA)
EP02445104A 2001-12-11 2002-08-23 Einlassystem für einen zentralen Staubsauger Expired - Lifetime EP1327409B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14714 2001-12-11
US10/014,714 US6698059B2 (en) 2001-12-11 2001-12-11 Intake system for central vacuum cleaner

Publications (2)

Publication Number Publication Date
EP1327409A1 true EP1327409A1 (de) 2003-07-16
EP1327409B1 EP1327409B1 (de) 2006-03-08

Family

ID=21767224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02445104A Expired - Lifetime EP1327409B1 (de) 2001-12-11 2002-08-23 Einlassystem für einen zentralen Staubsauger

Country Status (7)

Country Link
US (1) US6698059B2 (de)
EP (1) EP1327409B1 (de)
AT (1) ATE319368T1 (de)
CA (1) CA2391700C (de)
DE (1) DE60209694T2 (de)
NO (1) NO20023557L (de)
PT (1) PT1327409E (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100548897B1 (ko) * 2003-12-30 2006-02-02 삼성광주전자 주식회사 진공청소기의 호스고정장치
KR100558579B1 (ko) * 2003-12-31 2006-03-13 삼성광주전자 주식회사 진공청소기의 호스고정장치
US20080016646A1 (en) * 2005-01-10 2008-01-24 Martin Gagnon Housing assembly for a vacuum
US7461430B2 (en) * 2005-01-10 2008-12-09 Broan-Nutone Llc Vacuum system and method
US20090120292A1 (en) * 2007-11-13 2009-05-14 Foster John T Barrier filter high particulate entry design
US8174503B2 (en) * 2008-05-17 2012-05-08 David H. Cain Touch-based authentication of a mobile device through user generated pattern creation
US9078550B2 (en) 2011-11-11 2015-07-14 Electrolux Home Care Products, Inc. Latch assembly for a vacuum system
US9131816B2 (en) 2013-01-18 2015-09-15 Electrolux Home Care Products, Inc. Central vacuum cleaner apparatus
US20170273525A1 (en) 2016-03-28 2017-09-28 Nelson Hulli Convertible Central Vacuum Unit

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3023447A (en) * 1958-10-15 1962-03-06 Edgar P Senne Wall-installed vacuum cleaner
AU444864B2 (en) * 1971-03-22 1974-01-18 Dunham-Bush, Inc Quick connect air duct fittings
US4708370A (en) * 1985-11-14 1987-11-24 Toddco Recreational vehicle discharge pipe coupler
US5692542A (en) * 1995-10-13 1997-12-02 Advanced Micro Devices, Inc. Apparatus for capping an air vacuum outlet
US5784750A (en) * 1996-07-12 1998-07-28 The Scott Fetzer Company Multi-component flow passage assembly with snap in sealing adaptor

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US1942358A (en) 1931-12-01 1934-01-02 Pootatuck Corp Vacuum cleaner attachment for automobiles
US4336427A (en) * 1980-10-03 1982-06-22 Vacu-Maid, Inc. Outlet assembly for a vacuum cleaning system
US4591368A (en) 1984-04-27 1986-05-27 Macduff James L Built-in vacuum system
US4964189A (en) * 1989-01-12 1990-10-23 Hako Minuteman, Inc. Intake seal for tank vacuum cleaner
US4938309A (en) 1989-06-08 1990-07-03 M.D. Manufacturing, Inc. Built-in vacuum cleaning system with improved acoustic damping design
US5408722A (en) * 1993-10-06 1995-04-25 Shop Vac Corporation Hose connector for a vacuum cleaner
US6052863A (en) 1995-10-20 2000-04-25 Iowa State University Research Foundation, Inc. Central vacuum cleaner muffler
US5737797A (en) 1995-11-28 1998-04-14 Iowa State University Research Foundation, Inc. Central vacuum with acoustical damping
US5813085A (en) 1997-02-25 1998-09-29 White Consolidated Industries, Inc. Motor isolation gasket for central vacuum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023447A (en) * 1958-10-15 1962-03-06 Edgar P Senne Wall-installed vacuum cleaner
AU444864B2 (en) * 1971-03-22 1974-01-18 Dunham-Bush, Inc Quick connect air duct fittings
US4708370A (en) * 1985-11-14 1987-11-24 Toddco Recreational vehicle discharge pipe coupler
US5692542A (en) * 1995-10-13 1997-12-02 Advanced Micro Devices, Inc. Apparatus for capping an air vacuum outlet
US5784750A (en) * 1996-07-12 1998-07-28 The Scott Fetzer Company Multi-component flow passage assembly with snap in sealing adaptor

Also Published As

Publication number Publication date
PT1327409E (pt) 2006-07-31
CA2391700A1 (en) 2003-06-11
EP1327409B1 (de) 2006-03-08
US20030132634A1 (en) 2003-07-17
DE60209694D1 (de) 2006-05-04
US6698059B2 (en) 2004-03-02
CA2391700C (en) 2006-05-09
ATE319368T1 (de) 2006-03-15
NO20023557L (no) 2003-06-12
DE60209694T2 (de) 2006-10-05
NO20023557D0 (no) 2002-07-25

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